Portable, lightweight air source for one worker.
The Supplied Air Respirator (SAR) is a less expensive alternative to traditional continuous flow respirators. Continuous flow supplied air respirators provide a constant flow of air to the facepiece from an external air source and are used in non-IDLH environments. This comfortable full mask supplied air respirator system offers a portable lightweight air source for one worker. The Allegro supplied air system is durable and an easy to use fresh air respirator. The low pressure ambient air pump provides continuous flow to the full mask respirator that offers a unique "over-the-shoulder" hose design that holds the air hose out of the way of work. The full face mask is made from silicone and offers a double seal flange and unique "hairnet" strap for improved comfort. Supplied air system full mask can be worn under a hard hat. NIOSH-approved.
Pump must be placed in a clean air environment. Supplied air respirator system ambient air pumps do not require temperature alarms, CO monitors or airline filters, offering a cost-effective alternative when compressed air is not available. Additional air supplied hose can be purchased, total length of line not to exceed 100'.
System Equipped With:
- 1 each (9901) Fullmask Supplied-Air Respirator with belt
- 1 each (9806) 1/4-HP Oil-Less Air Pump
- 1 each (9100-50B) 50' Low Pressure Air Line
FREQUENTLY ASKED QUESTIONS ON AMBIENT AIR PUMPS
Question - What is the first thing I should do before operating my ambient air pump?
Answer - Plug in air hose and mask before running the air pump. If you run the air pump, even momentarily, without air hose or respirator being connected, this will result in a backpressure of the pump and possible damage to the pump.
Question - What is the total length of hose that I can have on an ambient air pump?
Answer - 100 ft. per worker.
Question - Can I extend the inlet filter to reach breathable air?
Answer - Yes, you can use an inlet extension hose to place the inlet filter in clean air environment, up to 200 ft.
Question - How long can my total system length be?
Answer - 300 ft. with a maximum of 100 ft. from pump to respirator and 200 ft. from pump to inlet filter.
Question - How do you read the gauge on the ambient air pump, and what should the settings be?
Answer - The gauge gives a reading of static pressure (or backpressure) at the pump, and will vary depending upon length of hose, type of pump, and the number of workers. To test for airflow (cfm) at respirator, use a flow meter kit (Allegro P/N 9900-40) at the end of breathing air hose.
Question - What does a rise on the pressure gauge mean?
Answer - It may indicate a clogged exhaust filter, or a restriction in the air hose. Make sure only an approved air supply hose is being used. Also check relief valve adjustment.
Question - What should I do if the ambient air pump is running hot?
Answer - Outlet pressure may be too high (above 11 psi). Adjust pressure relief valve. Intake and/or exhaust filter may be dirty, replace if necessary.
Question - Should I lubricate my pump?
Answer - No, pumps are oiless and require no lubrication. Pumps may be flushed periodically with non-oil based pump flushing liquid (P/N 9700-11).
Question - Can I use two different hose lengths from the pump to the respirator(s)?
Answer - This is not advisable because air will take the path of least resistance and may divert airflow from longer hose to shorter hose. Also, combinations of hoods and masks may divert airflow to the hood.
Question - How often should I change my filters?
Answer - Filters should be changed approximately every 200 working hours. Filters may require changing more often depending upon working environment.
Question - What kind of couplers must I use with the pump?
Answer - Couplers must mate with the air hose and respirator in use.
(Refer to the manufacturers manual.)
Question - Can I use a Vortex cooler with my pump?
Answer - No, ambient air pumps do not supply the required psi or cfm necessary to run these devices. Some cooling can be attained by running the pump at a lower psi, if possible, or by placing a few loose coils of air hose in an ice chest or bucket of cold water.
Question - Will my ambient air pump work with a pressure demand respirator?
Answer - No, the ambient air pump is only designed for use with constant flow respirators and does not have the psi or cfm capabilities to run a pressure demand respirator, nor is it approved for use in a IDLH application.
Question - Where can I place my ambient air pump?
Answer - Pump and or inlet filter for the ambient air pump must be placed in a fresh air environment where people are working normally without respiratory protection.
Question - What kind of application can I use an ambient air pump in?
Answer - Only those environments approved for use of a constant flow respirator (non-IDLH).
Question - What do I do if there is a drop in outlet pressure?
Answer - Check to see if outlet filter is cross-threaded or not seated firmly onto housing gasket. Check for dirty filter or exhaust filter, and replace it if necessary. Check to see if vanes are sticking. Check for worn vanes and replace if necessary.
Question - What if I have a noisy pump?
Answer - If vanes are sticking, clean or use recommended solvent for flushing. Check for broken vanes; replace all four vanes if necessary.
Question - What do I do if motor fails to start or hums?
Answer - Turn off switch. Thermal overload mechanism inside motor turns current off automatically when motor heats up, due to mechanical or electrical overload. Allow to cool for 5 to 15 minutes and try starting. If pump is extremely cold, bring to room temperature before starting. Loosen all 6 pump and plate bolts slightly. Re-tighten and try to run. Remove end plate. Check vanes and rotor for free movement. Clean with approved solvents, reassemble, and try to run. If anything appears to be wrong with the motor, return per instructions in return of merchandise instructions for repair. Rust might have formed in the pump chamber due to exposure to moisture. If pump rotor is frozen, clean chamber.
